Service and Troubleshooting *VZC20 Inverter Heat Pump Condenser Units with R-410A Refrigerant Blowers, Coils, & Accessories Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that during its lifetime a product may require service.
IMPORTANT INFORMATION CHECKING COMPRESSOR EFFICIENCY............... 23 THERMOSTATIC EXPANSION VALVE...................... 23 OVERFEEDING............................................................ 23 UNDERFEEDING......................................................... 23 SUPREHEAT................................................................ 23 CECKING SUBCOOLING............................................ 24 CHECKING THERMOSTATIC EXPANSION VALVE OPERATION................................................
IMPORTANT INFORMATION WARNING TO AVOID POSSIBLE EXPLOSION: •USE ONLY RETURNABLE (NOT DISPOSABLE) SERVICE CYLINDERS WHEN REMOVING REFRIGERANT FROM A SYSTEM. •ENSURE THE CYLINDER IS FREE OF DAMAGE WHICH COULD LEAD TO A LEAK OR EXPLOSION. •ENSURE THE HYDROSTATIC TEST DATE DOES NOT EXCEED 5 YEARS. •ENSURE THE PRESSURE RATING MEETS OR EXCEEDS 400 LBS. WHEN IN DOUBT, DO NOT USE THE CYLINDER. WARNING TO AVOID POSSIBLE INJURY, EXPLOSION OR DEATH, PRACTICE SAFE HANDLING OF REFRIGERANTS.
PRODUCT IDENTIFICATION NOMENCLATURES G V Z C 20 036 1 AA 1 2 3 4 5,6 7,8,9 10 11,12 Brand Engineering * G Goodman® Brand Major/ Minor Revisions * Not used for order or inventory control Product Category S Electrical Split System V Inverter Split System 1 - 208/230 V, 1 Phase, 60 Hz Unit Type Capacity X Condenser R-410A 024 2 Tons Z 036 3 Tons Heat Pump R-410A 048 4 Tons Communica�on Feature Efficiency C Integrated communica�ng ComfortBridge™ Technology 16 16 SEER A V
PRODUCT IDENTIFICATION NOMENCLATURES A V P E C 25 B 1 4 AA 1 2 3 4 5 6,7 8 9 10 11,12 Brand A Engineering* Single-Piece Air Handler Major/Minor Revisions *Not used for inventory management Unit Applica�on R Mul� Posi�on PSC Motor S Mul� Posi�on EEM Motor V Mul� Posi�on Variable-Speed Refrigerant Charge 4 = R-410A Electrical Motor - Communica�ng 1 Cabinet Finish U Unpainted P Painted 208/230V, 1 Phase, 60 Hz Cabinet Width B = 17½" C = 21" D = 24½" Expansion Device Nomi
SYSTEM OPERATION This section gives a basic description of heat pump condenser unit operation, its various components and their basic operation. Ensure your system is properly sized for heat gain and loss according to methods of the Air Conditioning Contractors Association (ACCA) or equivalent. NOTE: The pressures and temperatures shown in the refrigerant cycle illustrations on the following pages are for demonstration purposes only.
SYSTEM OPERATION DEFROST CYCLE COOLCLOUD™ HVAC PHONE APPLICATION The defrosting of the outdoor coil is controlled by the Control Board and the outdoor coil temperature thermistor and defrost sensor. The outdoor coil temperature thermistor (Tm) sensor is clamped to a return bend entering the outdoor coil and the defrost sensor at bottom flowrator leg at outdoor coil outlet. Defrost timing periods of 30, 60, 90 or 120 minutes may be selected via the thermostat setting.
SYSTEM OPERATION BOOST MODE • In addition, the system can have Enhanced Dehumidification operation in setting “A”, “B”, or “C” of BOOST MODE can be enabled or disabled through the dehumidification based on dehumidification demand. control board push buttons or through the CoolCloud app. - See the Dehumidification Select section for more detail.
SYSTEM OPERATION DEVICE STATUS This menu displays information about the systems current status. This menu can be utilized to confirm correct functionality of the equipment and for troubleshooting purposes.
SYSTEM OPERATION • Profile D (default) ramps up to 50% of the demand for 1/2 minute, then ramps to 82% of the full cooling demand airflow and operates there for approximately 7 1/2 minutes. The motor then steps up to the full demand airflow. Profile D has a 1/2 minute at 50% airflow OFF delay.
SYSTEM OPERATION MAX COMPRESSOR RPS FOR COOLING/HEATING (SELECTED RPS/ RPS range) Max compressor speed at which the outdoor unit will operate can be changed through the control board seven segment displays or the CoolCloud mobile app. Max compressor speed can be changed to get the required capacity or efficiency. Once the maximum speed is set, the system operates between the set maximum speed and default low speed.
SYSTEM OPERATION COOLING CYCLE NOTICE THE SPECIFICATION OF *VXC200601A OR EARLIER MODELS ARE DIFFERENT FROM THIS SPECIFICATION. FOR DETAILS, SEE THE SERVICE MANUAL THAT MATCHES THE MAJOR REVISION OF MODEL NAME.
SYSTEM OPERATION COOLING CYCLE NOTICE THE SPECIFICATION OF *VXC200601A OR EARLIER MODELS ARE DIFFERENT FROM THIS SPECIFICATION. FOR DETAILS, SEE THE SERVICE MANUAL THAT MATCHES THE MAJOR REVISION OF MODEL NAME.
SERVICING CHECKING VOLTAGE THERMOSTAT AND WIRING 1. Remove outer case, control panel cover, etc., from unit being tested. With power ON: WARNING LINE VOLTAGE NOW PRESENT. WARNING LINE VOLTAGE NOW PRESENT. With power ON, thermostat calling for cooling/heating. 1. Use a voltmeter to check for 24 volt at thermostat wires C and R in the indoor unit control panel. 2. No voltage indicates trouble in the thermostat, wiring or transformer source. 3. Check the continuity of the thermostat and wiring.
SERVICING The required wires are data lines 1 and 2. The thermostat needs 4 wires between the indoor unit and thermostat or 5 wires if the thermostat requires a Common wire. NOTE: Regarding the wiring of the indoor unit to the thermostat, also refer to ComfortBridge compatible indoor unit’s Install manual (in case of communicating inverter system.). If Installing with a CTK04 thermostat, please see the addendum for further instructions.
SERVICING 4. Compare your readings to the detected pressure vs output voltage in the following table. Replace the sensor if the sensor is open, shorted, or outside of the voltage range. WARNING LINE VOLTAGE NOW PRESENT. 700 600 Detected Pressure (PSIG) Ignition cannot occur at the venting terminal without the presence of contaminant air, and cannot occur externally from the venting terminal without the presence of an external ignition source.
SERVICING NOTE: If an open compressor is indicated, allow ample time for the internal overload to reset before replacing compressor. TESTING CRANKCASE HEATER (OPTIONAL) The crankcase heater must be energized a minimum of 2 hours before the unit is operated. Crankcase heaters are GROUND TEST used to prevent migration or accumulation of refrigerant in the compressor crankcase during the off cycles and preIf fuse, circuit breaker, ground fault protective device, etc.
SERVICING TESTING EEV COIL RESISTANCE leaking. When stuck in the mid-position, part of the discharge gas from the compressor is directed back to the To check the resistance of the EEV coil, first disconnect suction side, resulting in excessively high suction pressure. EEV cable from the Control board. Make measurements of An increase in the suction line temperature through the resistance between the connector pins, and then make sure reversing valve can also be measured.
SERVICING TROUBLESHOOTING MOTOR CONTROL CIRCUITS HIGH VOLTAGE! Disconnect ALL power before servicing or installing. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death. 1. Turn on power to air handler or modular. WARNING Line Voltage now present. 2. Check voltage between pins 1 and 4 at the 4-wire motor connector on the control board. Voltage should be between 9 and 15 VDC. Replace control if voltage is not as specified.
SERVICING MOTOR CONTROL CIRCUITS HIGH VOLTAGE! Disconnect ALL power before servicing or installing. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death. 1. Turn on power to air handler or modular. a. Red communications LED – Indicates the status of the network. Refer to the Network Troubleshooting Chart for the LED status and the corresponding potential problem. b. Green receive LED – Indicates network traffic.
SERVICING of 15% silver, 80% copper, and 5% phosphorous). Recommended heat 1400°F. Copper to Steel Joints - Silver Solder used without a flux (alloy of 30% silver, 38% copper, 32% zinc). Recommended heat - 1200°F. WARNING REFRIGERANT UNDER PRESSURE! Failure to follow proper procedures may cause property damage, personal injury or death.
SERVICING gauge (low side) has dropped to approximately 29 inches of vacuum, open the valve to the vacuum micron gauge. See that the vacuum pump will blank-off to a maximum of 500 microns. A vacuum pump can only produce a good vacuum if its oil is non-contaminated. CAUTION Use refrigerant certified to AHRI standards. Used refrigerant may cause compressor damage and is not covered by the warranty. Most portable machines cannot clean used refrigerant to meet AHRI Standards.
SERVICING 5. With the system still running, remove hose and reinstall both valve caps. 6. Check system for leaks. NOTE: Subcooling information is valid only while the unit is operating at 100% capacity or 100% of compressor speed in CHARGE MODE. Compressor speed is displayed under STATUS menu in the thermostat. CHECKING COMPRESSOR EFFICIENCY The reason for compressor inefficiency is that the compressor is broken or damaged, reducing the ability of the compressor to pump refrigerant vapor.
SERVICING NOTE: An optional method is to locate the thermometer at the suction line service valve. Ensure the thermometer makes adequate contact and is insulated for best possible readings. 3. Refer to the superheat table provided for proper system superheat. Add charge to lower superheat or recover charge to raise superheat. Superheat Formula = Suct. Line Temp. - Sat. Suct. Temp. EXAMPLE: a. Suction Pressure = 143 PSIG b. Corresponding Temp. = 50°F. c. Thermometer on Suction Line = 58°F.
SERVICING d. e. f. g. h. to rise subcooling to 8°F ± 1°F(*1), then check superheat. If subcooling is 8°F ± 1°F(*1) and superheat is high, adjust the TXV valve to 7 to 9°F superheat, then check subcooling. If subcooling and superheat are high, adjust the TXV valve to 7 to 9°F superheat, then check subcooling. If subcooling is high and superheat is 7 to 9°F, remove charge to lower the subcooling to 8°F ± 1°F(*1), then check superheat.
SERVICING CAUTION Do not allow the sludge or oil to contact the skin. Severe burns may result. NOTE: The Flushing Method using R-11 refrigerant is no longer approved by Daikin Brand Heating-Cooling. REFRIGERANT PIPING The piping of a refrigeration system is very important in relation to system capacity, proper oil return to compressor, pumping rate of compressor and cooling performance of the evaporator. A bi-flow filter drier must be brazed on by the installer onsite.
SERVICING Hanger Wall Stud Liquid Line Strapped to Suction Line Liquid Line Metal Sleeve Suction Line ® Wrapped in Armaflex FIGURE 1-1. INSTALLATION OF REFRIGERATION PIPING FROM VERTICAL TO HORIZONTAL IMPORTANT - Refrigerant lines must not touch wall.
SERVICING If hanging line set from a joist or rafter, use metal strapping or heavy nylon wire tires that are securely anchored. 8’ Wire Tie (around suction line only) Floor Joist or Roof Rafter Tape or Wire Tie 8’ Floor Joist or Roof Rafter Metal Sleeve Strapping placed around the suction line only Tape or Wire Tie After the suction line has been strapped to the joist or rafter at 8’ intervals, strap the liquid line to the suction line. SECTION 3. OUTDOOR UNIT IS ABOVE THE INDOOR UNIT 1.
SERVICING Oil Trap Construction LONG RADIUS STREET ELL 45° ELL SHORT RADIUS STREET ELL 45° STREET ELL SECTION 4. OUTDOOR UNIT IS BELOW THE INDOOR UNIT 1. The maximum elevation (vertical) difference between the outdoor unit and the indoor unit is 90 feet. 2. Suction line must be installed in a manner to prevent liquid migration to the outdoor unit from the indoor unit. The heat pump condenser unit is shipped with a predetermined factory charge level as shown in the following chart.
SERVICING DUCT STATIC PRESSURES AND/OR STATIC PRESSURE DROP ACROSS COILS This minimum and maximum allowable duct static pressure for the indoor sections are found in the specifications section. Tables are also provided for each coil, listing quantity of air (CFM) versus static pressure drop across the coil. Too great an external static pressure will result in insufficient air that can cause icing of the coil.
SERVICING • Measure static pressure of the return duct at the inlet of the furnace • Measure the static pressure of the supply duct at the outlet of the furnace • NOTE: Both readings may be taken simultaneously and read if so desired If the total external static pressure and/or static pressure drop exceeds the maximum or minimum allowable statics, check for closed dampers, dirty filters, undersized or poorly laid out duct work.
SERVICING INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1) COMMUNICATING BOARD AUXILIARY ALARM SWITCH CIRCULATOR BLOWER The control is equipped with two Auxiliary Alarm terminals, labeled CAS, which are typically utilized in series with a condensate switch but could also be used with compatible CO2 sensors or fire alarms. This air handler is equipped with a variable speed circulator blower. This blower provides several automatically-adjusted blower speeds.
SERVICING INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1) * (Factory Setting) OFF 19 kW or 20 kW 15 kW OFF ON ON OFF 10 kW ON OFF 8 kW OFF ON 6 kW 5 kW OFF ON ON OFF 3 kW ON OFF S9 S9 S9 S9 S9 S9 S9 S9 S10 S10 S10 S10 S10 S10 S10 S10 S11 S11 S11 S11 S11 S11 S11 S11 ON Electric Heating Air Flow (*indicates factory setting) NOTE: Upon start up in communicating mode the circuit board may display an “Ec” error.
SERVICING INDOOR UNIT TROUBLESHOOTING FOR TXV APPLICABLE UNIT (MBVC**00AA-1) 7 SEGMENT LED (characters will alternate) (nodisplay) On Ec E5 EF d0 d1 d4 b0 b1 b2 b3 DESCRIPTIONOFCONDITION INTERNAL CONTROL FAULT / NO POWER STANDBY, WAITING FOR INPUTS HEATER KIT TOO LARGE, TOO SMALL, OR NO MATCH FUSE OPEN AUXILIARY SWITCH OPEN DATA NOT ON NETWORK INVALIDDATAONNETWORK INVALID Bluetooth® SHARED DATA LOADER BTSDL01 DATA BLOWER MOTOR NOT RUNNING BLOWER MOTOR COMMUNICATION ERROR BLOWER MOTOR HP MISMATCH BLOWER
• Heater kit selected via dipswitches does not heater kits specified in shared data set • Aux switch open EC EF • Electric heat airflow is higher than expected on a call for W1 or Auxiliary/ Emergency heat • Integrated control module LED display provides the indicated error code. • Integrated control module LED display EF error code. • ComfortNet™thermostat “Call for Service”.
d0 d1 d4 • Air handler blower fails to operate. • Integrated control module LED display provides indicated error code. • ComfortNet™ thermostat “Call for Service” icon illuminated. • ComfortNet™ thermostat scrolls “Check Air Handler” message. • Air handler blower fails to operate. • Integrated control module LED display provides indicated error code. • ComfortNet™ thermostat “Call for Service” icon illuminated. • ComfortNet™ thermostat scrolls “Check Air Handler” message.
• Circulator blower motor is not running when it should be running. • Integrated control module has lost communications with circulator blower motor. • Circulator blower motor horse power in shared data set does not match circulator blower motor horse power. • Circulator blower motor is operating in a power, temperature, or speed limiting condition. • Circulator blower motor senses a loss rotor control. • Circulator blower motor senses high current.
• Air handler blower operates at reduced performance or operates on low stage when high stage is expected. • Integrated control module LED display provides indicated error code. • Air handler blower fails to operate. • Integrated control module LED display provides indicated error code. • ComfortNet™ thermostat “Call for Service” icon illuminated. • ComfortNet™ thermostat scrolls “Check Air Handler” message. • Air handler blower fails to operate.
SERVICING TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT WARNING HIGH VOLTAGE ! DISCONNECT ALL POWER BEFORE SERVICING. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. INDOOR UNIT CONTROL BOARD AUXILIARY ALARM SWITCH The control is equipped with two Auxiliary Alarm terminals, labeled TB4 and TB5, which are typically utilized in series with a condensate switch but could also be used with compatible CO2 sensors or fire alarms.
SERVICING TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT NOTE: Upon start up in communicating mode the circuit board may display an “Ed” error. This is an indication that the dip switches on the control board need to be configured in accordance with the Electric Heating Airflow Table. Configuring the dip switches and resetting power to the unit will clear the error code. See following image.
SERVICING TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT DIAGNOSTIC CODES DIAGNOSTIC CODES 7 SEGMENT LED DISPLAY DESCRIPTION OF CONDITION On Eb Normal Operation NO HTR KIT INSTALLED - SYSTEM CALLING FOR AUXILIARY HEAT (Minor Error Code) Ed HEATER KIT DIP SWITCHES NOT SET PROPERLY E5 FUSE OPEN EF AUXILIARY SWITCH OPEN d0 DATA NOT ON NETWORK d1 INVALID DATA ON NETWORK d4 INVALID BluetoothTM SHARED DATA LOADER DATA b0 BLOWER MOTOR NOT RUNNING b1 BLOWER MOTOR COMMUNICATION ERROR b2
SERVICING TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT 2-digit 7 segment displays 7 Segment LED Display (State) (No Di s pl a y) On FC FH _F digit 7 segment displays on indoor control board show current status of state, error code and airflow. H1 H2 dF “**“ “__“ State code (2sec.) No display (0.5sec.) “_E“ “__“ “**“ “__“ Error (2sec.) No display (0.5sec.) Error code (2sec.) No display (0.5sec.
SERVICING TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT 2-digit 7 segment displays 3. When the unit is havingsome minor error code in normalmode,2-digit 7 segmentdisplaysshow error code and airflowstatus. 2. Error code 3. Airflow 4. When the unit is havingsome minor error code during defrost opera�onin normalmode, 2-digit 7 segmentdisplaysshow state “dF”, error code and airflowstatus. 1. State (dF) 2. Error code 3. Airflow 5.
SERVICING SETTING THE MODE DISPLAY - INDOOR UNIT TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT 44
SERVICING SETTING THE MODE DISPLAY - INDOOR UNIT TROUBLESHOOTING-INDOOR UNIT FOR EEV APPLICABLE UNIT 45
No display (EE display is EMG mode) E_Eb E_Ed E_E5 E_EF E_d0 E_d1 E_d4 E_b0 E_b1 E_b2 E_b3 EE Eb Ed E5 EF d0 d1 d4 b0 b1 b2 b3 No Display Blower Motor HP Mismatch (MOTOR MISMATCH) Blower Communication Error • Correct motor installation • Populate shared data set using Bluetooth® Shared Data Loader BTSDL01.
E_b4 E_b6 E_b7 E_b9 E_9b E_70 E_73 E_74 E_75 E_77 b4 b6 b7 b9 9b 70 73 74 75 77*2 Incomplete Parameters Send to Motor (MOTOR PARAMS) No Display PRESSURE FLT GAS TEMP FLT LIQ TEMP FLT EEV OPEN CKT LOW ID AIR EH MODE • Fan/motor obstruction or blocked filters • Restrictive ductwork or ductwork undersized • ID motor failure • Combination mistake of outdoor unit and indoor unit • Open (or) short circuit of the gas thermistor (X5A) • Gas thermistor reading incorrect or values outside
SERVICING HEAT PUMP ADVANCED FEATURE MENU SUBMENU ITEM ALL ACTIVE HISTORY REFRESH HEAT PUMP / FAULT CODE HISTORY INDICATION/USER MODIFIABLE OPTIONS (The Active and History Fault codes are displayed.) (The Active Fault codes are displayed.) (The History Fault codes are displayed .
SERVICING HEAT PUMP ADVANCED FEATURE MENU HEAT PUMP / DEVICE SETTING (1) INDICATION(Units) SUBMENU ITEM BOOST MODE ENABLE OFF or ON BOOST TEMP Always Active or 70F to 105F in icrements INDOOR/OUTDOOR HEIGHT DIFFERENCE Both Units at Same Level, Outdoor Unit is Lower, or Indoor Unit is Lower RESET FOR SYSTEM SET UP NO or YES SYSTEM VERIFICATION TEST OFF or ON PUMP DOWN OFF or ON ACTIVATE CHARGE MODE OFF or ON COOLING TRIM FACTOR(HIGH) *1, 2 -15% to +15% in 5% increments COOLING TRIM FACTOR(
SERVICING HEAT PUMP ADVANCED FEATURE MENU HEAT PUMP/ DEVICE SETTING (2) INDICATION(Units) SUBMENU ITEM *4 DEHUMIDIFICATION ENABLE Standard, OFF, A, B or C RESET COOLING SETTINGS NO or YES RPS RANGE FOR COOLING SELECTED RPS FOR COOLING COMMENTS Selecting "OFF" disables dehumidification selecting. "Standard", "A", "B" or "C" enables dehumidification. Selecting yes will reset any cooling setting to their factory defaults. **.* to **.
SERVICING EMERGENCY MODE FOR EEV APPLICABLE INDOOR UNIT Emergency mode is to only be used in a situation where communication between equipment (broken wires) or a failed thermostat cannot be immediately corrected or replaced. This mode will allow for cooling or heating to be activated without the need of communication wires or a thermostat.
SERVICING Upon start up in emergency mode the circuit board may display an “Ed” error. This is an indication that the DIP switches on the control board need to be configured in accordance with the Electric Heating Airflow Table. Configuring the DIP switches to the unit will clear the error code.
SERVICING 2. COOLING EMERGENCY MODE Cooling emergency mode is to be used when communication between the indoor and outdoor units is not functioning properly and temporary cooling operation is required. This mode enables the outdoor unit and indoor unit to run independently of each other. There are two key steps to setup Cooling Emergency Mode.
SERVICING TROUBLESHOOTING- OUTDOOR UNIT AND INDOOR UNIT FOR EEV APPLICABLE UNIT Dipswitch Default Factory Se�ngs Switch # ID DS-1 ID DS-2 ID DS-3 ID DS-4 ID DS-5 ID DS-6 OD DS-1 OD DS-2 Se�ng Func�on 1 OFF No Use 2 OFF No Use 3 OFF No Use 4 OFF No Use 5 OFF No Use 6 OFF No Use 7 OFF No Use 8 OFF No Use 9 OFF Heater Kit Selec�on in Emergency Mode 10 OFF Heater Kit Selec�on in Emergency Mode 11 OFF Heater Kit Selec�on in Emergency Mode 12 OFF Heater Kit Selec�on
SERVICING COOLING EMERGENCY MODE WIRING FOR TXV APPLICABLE INDOOR UNIT Cooling emergency mode is available when using a TXV applicable indoor unit. To energize the blower at the appropriate speed, standard Legacy wiring is required. The image below shows how the thermostat input terminals are to be wired when selecting a cooling airflow. Note: the blower will run continuously with this wiring which is required.
SERVICING SETTING THE MODE DISPLAY - OUTDOOR UNIT MODE DISPLAY INTRODUCTION A 3-digit display is provided on the Control board as a backup tool to the thermostat for reading faults, fault history, monitoring and setting up the unit. Follow the information provided in this section to learn how to use the mode display. DISPLAY The display consists of 3 digits. OFF ON Blink interval: 0.4 sec. On - 0.4 sec.
SERVICING SETTING THE MODE DISPLAY - OUTDOOR UNIT NAVIGATING THROUGH THE DISPLAY SCREENS SCREEN 0 The home or default screen on the display. This shows the most recent fault. SCREEN 1 To access, hold the RECALL button for 5 seconds at screen 0. SCREEN 2 To access, hold the RECALL button for 5 seconds at screen 1. SCREEN 3 To access, hold the RECALL button for 5 seconds at screen 2. SCREEN 4 To access, hold the RECALL and TEST buttons simultaneously for 5 seconds at screen 2.
SERVICING SETTING THE MODE DISPLAY - OUTDOOR UNIT FAULT CODE HISTORY NAVIGATION < SCREEN 1> This mode will allow the user to see the six most recent system faults. For a list of the fault codes, please see the TROUBLESHOOTING tables in this document. < SCREEN 0 > Press LEARN Hold RECALL < SCREEN 1 > The display will change to < SCREEN 1 >. Press RECALL to change Fault code history. Displays most recent Fault code. Press RECALL. Press RECALL Displays 2nd most recent Fault code. Press RECALL.
SERVICING SETTING THE MODE DISPLAY - OUTDOOR UNIT MONITORING MODE NAVIGATION OFF < SCREEN 0 > < SCREEN 2 > This screen allows the user to monitor system variables as shown in the tables at the end of this section. ON Blink interval: 0.4 sec. On - 0.4 sec. Off < SCREEN 1 > Press LEARN Hold RECALL < SCREEN 2 > Press RECALL to increase the value. Press RECALL. Press RECALL Press RECALL. Press TEST to confirm the setting. Item number Display flickers at 1 second intervals. Value Press RECALL.
SERVICING SETTING THE MODE DISPLAY - OUTDOOR UNIT SETTINGS MODE 1 NAVIGATION < SCREEN 3 > Setting Mode 1 allows the user to adjust system settings as shown in the tables at the end of this section. OFF < SCREEN 0 > ON Blink interval: 0.4 sec. On - 0.4 sec. Off < SCREEN 2 > Hold RECALL. Press LEARN. < SCREEN 3 > Press RECALL to increase the value. Press RECALL. Press RECALL. Press RECALL. Press TEST to change setting. Press RECALL. Press TEST to complete setting and return to setting mode.
SERVICING SETTING THE MODE DISPLAY - OUTDOOR UNIT SETTINGS MODE 2 < SCREEN 4 > Setting Mode 2 allows the user to change system settings. See table in back of this section. OFF < SCREEN 0 > ON Blink interval: 0.4 sec. On - 0.4 sec. Off < SCREEN 2 > Hold RECALL and TEST. Press LEARN. < SCREEN 4 > Press RECALL to increase the number. < Changing setting display > Press RECALL. Press RECALL Press RECALL. Press TEST to change setting. Press RECALL. Press RECALL. Press RECALL. Press RECALL.
SERVICING 7-SEGMENT DISPLAY SCREEN 0 (Display FAULT CODE) Setting No. Contents 1 Fault code (present) Notes SCREEN 1 (Display FAULT CODES) Setting No. Contents Notes 1 Fault code (latest) Latest 2 Fault code (2nd) 2nd 3 Fault code (3rd) 3rd 4 Fault code (4th) 4th 5 Fault code (5th) 5th 6 Fault code (6th) 6th Contents Notes SCREEN 2 (MONITOR MODE) Setting No.
SERVICING 7-SEGMENT DISPLAY SCREEN 3 (SETTING MODE 1) SCREEN 3 (SETTING MODE 1) Setting No.
SERVICING 7-SEGMENT DISPLAY CTK04 ADDENDUM SCREEN 4 (SETTING MODE 2) Setting No. Conte nts Se tting 0: 30min. 1: 60min. 2: 90min. 3: 120min.
SERVICING CTK04** COMFORTNET™ THERMOSTAT OVERVIEW The ComfortNet™ system (or CT system) is a system that includes a ComfortNet compatible modular blower heat pump condenser with a CTK04** thermostat. The table below compares the valid CT systems.
SERVICING THERMOSTAT MENU SCREEN SYSTEM START-UP TEST NOTICE ON INITIAL POWER START-UP, THE OUTDOOR UNIT WILL DISPLAY CODE E11, SIGNALING THAT INITIAL SYSTEM TEST MUST BE RUN. FOLLOW THE COMFORTNET™ SETUP SCREEN TO ENTER APPLICATION-UNIQUE INFORMATION. SEE COMFORTNET THERMOSTAT MANUAL FOR DETAILED INFORMATION. A system test is now required to check the equipment settings and functionality. Once selected, it checks the equipment for approximately 5 - 15 minutes.
SERVICING CTK04 ADDENDUM 4. From the MENU screen, scroll down and select ComfortNet™ USER MENU. 5. Enter Installer password. (The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom.) 6. Select YES to continue. 7. From the ComfortNet USER MENU, select HEAT PUMP. Note: Screen may show air handler or furnace depending on the type of system installed.
SERVICING 8. Next, scroll down and select EQUIP TEST. 9. Select SYSTEM TEST. 10.Select ON to run the SYSTEM TEST. Press DONE to initiate test. 11.Allow the system test to run for its duration (5-15 minutes). EQUIP TEST SCREEN will show the system test is ON once selected. System test will operate the outdoor unit and the indoor unit through a series of startup tests. Please proceed to the next step and allow for startup tests to complete.
SERVICING 12.Press Previous Menu button and navigate to HOME screen and allow test to finish. The display similar to the one at the right will be displayed after SYSTEM TEST completes. Test is complete only when CODE 11 notice clears from BOTH the thermostat display AND the seven segment LED display on the outdoor unit. Please wait for test to complete and for both codes to clear. CTK04 ADDENDUM SET THERMOSTAT TO CHARGE MODE Please follow the following sequence to enter CHARGE Mode.
SERVICING 3. Enter Installer password. (The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom). 4. Select YES to continue. 5. Select HEAT PUMP. 6. Select MAINTENANCE.
SERVICING 7. Select CHARGE Mode. CTK04 ADDENDUM 8. Select ON. Press DONE to initiate CHARGE Mode. (System will then run for 1 hour and either return to cooling or heating mode depending on if the mode thermostat is set at COOL or HEAT MODE from the SYSTEM menu on the main screen. If charging is not complete after 1 hour, repeat 7. and 8. Refer to S-103 for refrigerant charge level adjustment. 9. To terminate CHARGE MODE, select CHARGE Mode screen again. Press OFF. Press DONE to terminate CHARGE MODE.
SERVICING CTK04 ADDENDUM BOOST MODE BOOST MODE enables the system to operate at a higher compressor speed than rated maximum compressor speed and satisfy the structural load more effectively during higher ambient outdoor conditions. BOOST MODE is initiated by an outdoor temperature sensor located in the outdoor unit. Please note that outdoor equipment operational sound levels may increase while the equipment is running in BOOST MODE.
SERVICING 3. Enter Installer password, if known. a. The password is the thermostat date code and can be obtained by selecting the red Cancel button and selecting the Dealer Information button. b. Once recorded, click the green OK button and return to previous step. CTK04 ADDENDUM Menu > ComfortNet User Menu Please enter the installer password 1 Cancel 4. Select YES to continue.
SERVICING 7. BOOST MD turns BOOST MODE OFF or ON. BOOST MODE is ON by default. CTK04 ADDENDUM ...ComfortNet User Menu > Heat Pump > SYS SETUP Previous Menu SET MAX CURRENT : OFF Help Outdoor VERTICAL RISE : Lower BOOST MD : ON BOOST TEMP : Always On ...HEAT PUMP > SYS SETUP > BOOST MD OFF ON Cancel 8. BOOST TEMP adjusts the activation temperature from 70°F to 105°F. “Always ON” option is also available to permanently engage BOOST MODE. Factory default is 105°F. Help Done ...
SERVICING CTK04 ADDENDUM 9. Once satisfied with BOOST MODE adjustments, navigate to the HOME screen by selecting the Previous Menu button three times then selecting HOME. DEHUMIDIFICATION The thermostat reads the indoor humidity level and allows the user to set a dehumidification target based on these settings. The thermostat controls the humidity level of the conditioned space using the cooling system.
SERVICING CTK04 ADDENDUM DEHUMIDIFICATION SELECT* When Dehumidification mode exists, the circulating fan output is reduced, increasing system run time, over cooling the evaporator coil and ultimately removing more humidity from the structure than if only in cooling mode. The system can have Dehumidification operation in setting “STD”, “A”, “B” or “C” of “Dehumidication Select” based on dehumidification demand. Setting “STD” allows for the widest compressor operation range with lower CFM than Cooling mode.
SERVICING SET THERMOSTAT TO ADJUST MAXIMUM COMPRESSOR SPEED CTK04 ADDENDUM Please follow the following sequence to enter MAXIMUM compressor speed. Maximum compressor speed at which the outdoor unit will operate in cooling or heating mode can be changed using thermostat. Maximum compressor speed can be changed to get the required capacity or efficiency. Once the maximum speed is set, the system operates between the set maximum speed and default low speed. 1. On the HOME screen, select MENU 2.
SERVICING 4. Select YES to continue. CTK04 ADDENDUM Menu > ComfortNet User Menu Changing these se�ngs could cause improper opera�on of your HVAC equipment! Would you like to con�nue? Yes No 5. Select HEAT PUMP. Menu > ComfortNet User Menu 6. Select CL RUN VALUES: for cooling mode HT RUN VALUES: for heating mode 7.Select Cool/HEAT RPS RANGE. Press Cool RPS Range (for cooling mode) or HEAT RPS RANGE (heating mode) to select the range in which the desired Maximum compressor speed falls.
SERVICING CTK04 ADDENDUM 8. Select Cool RPS SELECT(cooling mode) or HEAT RPS SELECT (heating mode). Select the desired Maximum compressor speed 9. Once Maximum compressor speed is set, navigate to HOME screen. Enter normal operation with temperature offset or thermostat schedule, as desired. HOME FAN 72° 1. On the HOME screen, select MENU OUTDOOR 69° STATUS cool mode HOME 39 % Humidity FAN 74° 11:17 pm 63 % Humidity STATUS heat mode HOME SYSTEM SET TO 76° MENU INDOOR Tue, Apr 1,2014 2.
SERVICING 3. Enter Installer password. (The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom). 4. Select YES to continue. 5. Select HEAT PUMP. 6.
SERVICING 7. User can change the airflow trim at high, intermediate and low compressor for cooling and heating mode. Select: Cool Airflow Trim Hi: high speed cooling Cool Airflow Trim Int: intermediate speed cooling Cool Airflow Trim Low: low speed cooling Heat Airflow Trim Hi: high speed heating Heat Airflow Trim Int: intermediate speed heating Heat Airflow Trim Low: low speed heating CTK04 ADDENDUM Under each trim setting, the airflow can be increased or decreased by a certain percentage.
SERVICING SET THERMOSTAT TO ADJUST INDOOR AIRFLOW PROFILE, COOL/HEAT ON DELAY AND COOL/HEAT OFF DELAY DEFROST 1. Please follow the sequence 1. to .6 of Set Thermostat To Adjust Indoor Air CFM trim 2. Select Cool Set-up for Cool Airflow Profile, Cool ON Delay or Cool OFF Delay Heat Set-up for Heat ON Delay or Heat OFF Delay Heat Airflow Profile, DEFROST 3. Once Cool Set-up / Heat Set-up settings are complete, navigate to HOME screen.
SERVICING SET THERMOSTAT TO FORCE DEFROST CYCLE CTK04 ADDENDUM Follow the following sequence to Force a defrost cycle. NOTE: Unit will need to wait another 6 minutes before starting another force defrost cycle. 1. On the HOME screen, select MENU. 2. From the MENU screen, select COMFORTNET™ USER MENU. 3. Enter Installer password. (The password is the Date Code located on the thermostat and is available by entering the EQUIPMENT STATUS menu and scrolling to the bottom). 4. Select YES to continue.
SERVICING 5. Select HEAT PUMP. 6. Select EQUIP TEST. 7. Select FORCE DF CYCLE. 8. Select ON. Press DONE to initiate FORCE DEFROST CYCLE.
SERVICING SET THERMOSTAT TO PUMP DOWN CTK04 ADDENDUM Please follow the following sequence to enter PUMP DOWN to accumulate the refrigerant to outdoor unit. Do not operate Cool ON or Heat ON mode to enter PUMP DOWN. Before starting the PUMP DOWN operation, change indoor fan trim, delay and profile back to default and stop electric heater and gas furnace. Remove if no trim feature. In this operation, the gas valve and liquid service valve should be opened.
SERVICING 4. Select YES to continue. 5. Select HEAT PUMP . 6. Select MAINTENANCE. 7. Select PUMP DOWN.
SERVICING 8. Select ON. Press DONE to initiate PUMP DOWN. Approximately one minute later, the compressor should start operating. Check the amperage at the compressor wiring to see the compressor operation status. Close liquid service valve approximately two minutes after compressor has come on. Compressor will stop automatically then close the gas service valve immediately. CTK04 ADDENDUM 9. To terminate PUMP DOWN, select PUMP DOWN screen again. Press OFF. Press DONE to terminate PUMP DOWN. 10.
SERVICING SET 7-SEGMENT MODE DISPLAY TO PUMP DOWN Please follow the following sequence to enter PUMP DOWN to accumulate the refrigerant to outdoor unit. Do not operate COOL ON or HEAT ON mode to enter PUMP DOWN. Before starting the PUMP DOWN operation, change indoor fan trim, delay and profile back to default and stop electric heater and gas furnace. Remove if no trim feature. In this operation, the gas and liquid service valve should be opened. 1.
SERVICING 3. Follow screen for System Status.
SERVICING TROUBLESHOOTING - INDOOR UNIT FOR EEV APPLICABLE UNIT CTK04 ADDENDUM DIRECTIONS TO COMFORTNET SYSTEM ADVANCED FEATURE MENUS Press MENU, scroll down and press COMFORTNET USER MENU. Enter the date code (password) when prompted. The date code is printed on the back of the thermostat; or press MENU>EQUIPMENT STATUS and scroll down to find the date code. After you enter the date code, select air handler to view the system menus.
SERVICING CTK04 ADDENDUM TROUBLESHOOTING - INDOOR UNIT FOR EEV APPLICABLE UNIT SET-UP SET-UP Submenu Item User Modifiable Options Comments HUM OFF*, ON, IND HUM FAN SPD (%) 25%, 50%*, 75% , 100% Choose the indoor fan speed at the time of humidification (This selection is only displayed if IND is selected in HUM and HUM is selected in ACC) ACC HUM, W/BLWR, NONE* Choose Accessory (Humidifier, any other accessory requiring blower or none) HT KIT (kW) All valid HT options Chose valid heater kit
SERVICING CTK04 ADDENDUM HEAT PUMP ADVANCED FEATURE MENU SUBMENU ITEM DIAGNOSTICS INDICATION/USER COMMENTS MODIFIABLE OPTIONS Cl e ar Faul ts NO or YES Faul t 1 Most re ce nt HP faul t Faul t 2 2nd most re ce nt HP faul t Faul t 3 3rd most re ce nt HP faul t Faul t 4 4th most re ce nt HP faul t Faul t 5 5th most re ce nt HP faul t Faul t 6 6th most re ce nt HP faul t Se l e cti ng "YES" cl e ars the faul t hi story.
SERVICING CTK04 ADDENDUM HEAT PUMP ADVANCED FEATURE MENU SYSTEM SETUP (SYS SETUP) SUBMENU ITEM USER MODIFIABLE OPTIONS COMMENTS Reset System Setup Op�ons to Factory Defaults N O o r YES Selecting "YES" resets this menu to factory default settings. SET MAX CURRENT N /A Future use. VERTICAL RISE Same Level, Outdoor Lower, or Indoor Lower If the outdoor & indoor units are within +/- 15 �. ver�cal distance, select SAME LEVEL. If the outdoor unit is more than 15 �.
SERVICING CTK04 ADDENDUM HEAT PUMP ADVANCED FEATURE MENU COOL SETUP SUBMENU ITEM USER MODIFIABLE OPTIONS CL Reset Cool Airflow Trim Hi (CL RESET) *1, *2 (C TR H) Cool Airflow Trim Int (C TR I) Cool Airflow Trim Low (C TR L) Cool Airflow Profile (CL PRFL) Cool ON Delay (CL ON) Cool OFF Delay (CL OFF) Dehumidification Select (DEHUM) COMMENTS YES or NO Selecting to default factory setting. -15% to +15% in 5% increments Selects the cooling airflow trim amount.
TROUBLESHOOTING X Line set restriction X X X X X X X X X X X X X X X X X X X X X X X X X X X OD EEV failure X X X Stop operation X Noise X X No switch cooling X X X Requested % demand < Actual X X Low pressure < 100psi Low pressure > 185psi X OD EEV coil failure Blocked filter-dryer X OD SSV SH < 4F X Line set length is too long X OD SSV SH > 20F LSV SC < 4F LSV SC > 12F High pressure < 255psi High pressure > 490psi X Weak cooling X X Repeated st
X X X Line set restriction X X X X X X X X Sweating liquid line X Stop operation X Incomplete defrost operation X Noise X X No switch heating X X Requested % demand < Actual % X X Low pressure < 40psi X X LSV SC < 4F LSV SC > 12F High pressure LSV< 270psi X X X X Line set length is too long Weak heating X X Repeated stop/start X Gas stop valve does not fully open Requested % demand > Actual % Liquid stop valve does not fully open High pressure SSV< 270psi High p
TROUBLESHOOTING Fault Code Control Board LED Display Transmitted Climate Talk Message 12 E12 OD CTRL FAIL1 13 14 15 16 E13 - E15 - ● High electrical noise ● Faulty control board Corrective Actions ● Replace control board if necessary ● Check and clean condenser coil and/or lines ● Check the opening of stop valve, should be full open; Repair/replace if needed ● Check refrigerant charge level; Adjust if needed ● Check outdoor fan motor & wiring; Repair/replace if needed ● Check TXV; Replace if
TROUBLESHOOTING Fault Code Control Board LED Display Transmitted Climate Talk Message Thermostat Fault ● Discharge thermistor inoperable or improperly connected ● Discharge thermistor is put on incorrect position or off ● Low refrigerant charge ● Overcharge ● Faulty compressor ● Check discharge thermistor resistance and connections; Repair/replace as needed ● Check discharge thermistor position ● Check refrigerant charge level; Adjust if needed ● Check the compressor; Repair/replace if needed Probable
TROUBLESHOOTING Fault Code Control Board LED Display Transmitted Climate Talk Message Thermostat Fault Probable Causes Corrective Actions ● Check installation clearances. ● Check the opening of stop valve, should be full open; Repair/replace if needed ● Check refrigerant charge level; Adjust if needed ● Replace control board if necessary ● Check the compressor; Repair/replace if needed. 35 E35 HIGH CURRENT Board detected a high current condition.
TROUBLESHOOTING Fault Code 53 54 55 Control Board LED Display - - - 57 - B0 Eb0 B9 Eb9 D0 Ed0 Transmitted Climate Talk Message Thermostat Fault PCB PR FAN MIN This error indicates the equipment is experiencing frequent outdoor control board and/or motor faults. Control has determined continued operation is acceptable. This indicates there may be a problem with the equipment.
TROUBLESHOOTING RE-WRITING SHARED DATA TO OUTDOOR UNIT USING BLUETOOTH® SHARED DATA LOADER BTSDL01 Check Troubleshooting codes to determine the need to flash shared data to outdoor unit. Follow the below procedure to flash shared data. Procedure to flash shared data to Outdoor unit using Bluetooth® Shared Data Loader BTSDL01 1. Turn the power OFF to the outdoor unit. 2. Disconnect the Climate Talk (CT) connector from the outdoor unit. 3.
TROUBLESHOOTING RED LED (H1P) Bluetooth® Shared Data Loader BTSDL01 CONNECTOR (X52A) ZOOMED VIEW OF 20 SEER OD CONTROL BOARD 102
TROUBLESHOOTING NETWORK TROUBLESHOOTING If a network communication error code has occurred, use the following steps to help troubleshoot the system. (For network communication error codes, refer to the table below and the tables of error codes for outdoor unit and indoor unit.) After any wiring changes have been made or DS1 dip switches on the outdoor unit control board have been changed, apply power to the system and see if the error codes have cleared. 1.
TROUBLESHOOTING THERMISTOR RESISTANCE VALUE Tm : Coil TI : Liquid Tb : Defrost Tgi: Indoor Gas Tli: Indoor Liquid 104 Tl : Liquid Td : Discharge Ta : Ambient TEMP TEMP Thermistor Resistance Volts Thermistor Resistance Volts Thermistor Resistance Volts Thermistor Resistance Volts ( ℃) (F) R（kΩ） DC（V) R（kΩ） DC（V) R（kΩ） DC（V) R（kΩ） DC（V) -30 -22 364.43 4.58 364.43 4.58 4759.15 4.96 362.48 4.58 -25 -13 267.00 4.45 267.00 4.45 3454.24 4.94 265.99 4.45 -20 -4 197.
TROUBLESHOOTING PRESSURE TEMPERATURE R-410A Pressure vs. Temperature Chart PSIG 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 102 104 106 108 110 112 °F -37.7 -34.7 -32.0 -29.4 -36.9 -24.5 -22.2 -20.0 -17.9 -15.8 -13.8 -11.9 -10.1 -8.3 -6.5 -4.5 -3.2 -1.6 0.0 1.5 3.0 4.5 5.9 7.3 8.6 10.0 11.3 12.6 13.8 15.1 16.3 17.5 18.7 19.8 21.0 22.1 23.2 24.3 25.4 26.4 27.4 28.5 29.5 30.5 31.2 32.2 33.2 34.1 35.1 35.5 36.
TROUBLESHOOTING Required Liquid Line Temperature LIQUID PRESSURE AT SERVICE VALVE (PSIG) 189 195 202 208 215 222 229 236 243 251 259 266 274 283 291 299 308 317 326 335 345 354 364 374 384 395 406 416 427 439 450 462 474 486 499 511 106 8 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 102 104 106 108 110 112 114 116 118 120 122 124 126 128 REQUIRED SUBCOOLING TEMPERATURE (°F) 10 12 14 16 56 54 52 50 58 56 54 52 60 58 56 54 62 60 58 56 64 62 60 58 66 64 62 60 68 66 64 62 70 68 66 64 7
TROUBLESHOOTING WARNING HIGH VOLTAGE ! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. CAUTION WHEN REPLACING THE ELECTRICAL BOARD, DO NOT TOUCH THE HATCHED AREAS. BEFORE INSTALLING THE NEW ELECTRICAL BOARD, BE SURE TO WIPE THE GREASE OFF THE REFRIGERANT TUBING. EXERCISE CAUTION TO NOT DAMAGE THE ELECTRICAL CONNECTIONS. DISCONNECT AS NEEDED.
TROUBLESHOOTING WARNING AVOID CONTACT WITH THE CHARGED AREA. •NEVER TOUCH THE CHARGED AREA BEFORE CONFIRMING THAT THE RESIDUAL VOLTAGE IS 50 VOLTS OR LESS. 1. SHUT DOWN THE POWER AND LEAVE THE CONTROL BOX FOR 10 MINUTES. 2. MAKE SURE TO TOUCH THE EARTH GROUND TERMINAL TO RELEASE THE STATIC ELECTRICITY FROM YOUR BODY (TO PREVENT FAILURE OF THE PC BOARD). 3. MEASURE THE RESIDUAL VOLTAGE IN THE SPECIFIED MEASUREMENT POSITION USING A VOM WHILE PAYING ATTENTION NOT TO TOUCH THE CHARGED AREA. 4.
TROUBLESHOOTING WARNING AVOID CONTACT WITH THE CHARGED AREA. •NEVER TOUCH THE CHARGED AREA BEFORE CONFIRMING THAT THE RESIDUAL VOLTAGE IS 50 VOLTS OR LESS. 1. SHUT DOWN THE POWER AND LEAVE THE CONTROL BOX FOR 10 MINUTES. 2. MAKE SURE TO TOUCH THE EARTH GROUND TERMINAL TO RELEASE THE STATIC ELECTRICITY FROM YOUR BODY (TO PREVENT FAILURE OF THE PC BOARD). 3. MEASURE THE RESIDUAL VOLTAGE IN THE SPECIFIED MEASUREMENT POSITION USING A VOM WHILE PAYING ATTENTION NOT TO TOUCH THE CHARGED AREA. 4.
R C TO INDOOR UNIT GR 2 E1 X25A L 0 Y2 Y1 W1 1 X851A L2 L1 NOTE 1 DS1 2 1 ON OFF X21A EEV RD FIELD WIRING SEE NOTE 3 208-230 V 60 HZ TERMINAL BLOCK BK Z3C BS3 HR3 GROUND LUG SEE NOTE 3 X108A HR4 HR1 BK RD WH BR WH - + Z2C Z1C HPS H/LPT COLOR CODE: RD------------RED BR------------BROWN GR-----------GREEN BK------------BLACK WH-----------WHITE YL------------YELLOW BL------------BLUE GY-----------GRAY PU-----------PURPLE YL W Z4C RD V HR2 BK U X32A X52A SHARE
BK BK GR SEE NOTE 4 SEE NOTE 3 R C TO INDOOR UNIT E1 X851A HPS X32A X99A X25A 0 L Y2 Y1 W1 2 1 X12A OFF RD BL BS2 FIELD WIRING NOTE 3 208-230 V 60HZ X52A W V U L2C RD BK COLOR CODE: RED RD-------------BROWN BR-------------GREEN GR-------------BLACK BK-------------WHITE WH------------YELLOW YL--------------BLUE BL--------------- Z3C RD WH BK YL RD BK L1B RD Z2C Z1C NOTE: The compressor can operate normally in any of the following wiring connections shown on the righ
WIRING DIAGRAM HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
BR WH RD TB5 TB4 5 5 M BK 3 3 RD 208 C VAC K1R K3R F1U K2R BK RD BL X15A X2A PS F2U TB7 COM GR M X5A TB1 TH1 RD 208 VAC C BL SEG1 Y2 Y1 C DS1 MPU STATUS LED (SEE NOTE 6) (SEE NOTE 6) LEARN BS1 BS2 G RD DS5 X8A 1 BK DS4 DS3 INDOOR UNIT PCB ON OFF 2 X7A DS2 R GY THERMOSTAT RX LED (SEE NOTE 6) W2 W1 (SEE NOTE 5) FAULT RECALL CPU LED X13A O X12A DEHUM DS6 TB2 TR1 BK CONNECTION DISABLED TR1 (SEE NOTE 1) 230 VAC SEG2 24VAC O THERMISTOR PRES
ACCESSORIES EXPANSION VALVES *VZC20***1** Model Name *VZC200241** *VZC200361** *VZC200481** *VZC200601** TXV-Kit TXV-V24 TXV-V36 TXV-V48 TXV-V60 R410A - Max. 75°C (167°F) SS = 2°C (3.6°F) or according cation Number of turns Number of turns from SS to from SS to TIGHT Spring LOOSE Spring from SS to tight spring R410A: 0.6°C / turn - 1.1°F / turn R22 R410A R410A 114 + +9.5 +7.25 +9.5 Number of turns from SS to loose spring Number of turns - -2 –4.
ACCESSORIES ELECTRIC HEATER (OPTIONAL ITEM) Optional electric heaters may be added, in the quantities shown in the specifications section, to provide electric resistance heating. Under no condition shall more heaters than the quantity shown be installed. The low voltage circuit in the air handler is factory wired and terminates at the location provided for the electric heater(s). A minimum of field wiring is required to complete the installation.
ACCESSORIES AV**PEC X X X X X X X X X X X X X X X X X X X X X X X X X HKSC25DB HKSC20DB X X HKSC25DA HKSC20DH X HKSC20XF HKSC19CB X X HKSC15XB X X HKSC15XA X X HKSC10XC X X HKSC08XC X X HKSC05XC X HKSX10XC X X HKSX08XC HKSC19CA X HKSC15XF AVPEC25B14A* AVPEC37C14A* AVPEC59D14A* AVPEC61D14A* HKSX06XC MODELS HKSX05XC HKSX03XC HEATER KIT X X X *Revision level taht may or may not be designated.
ACCESSORIES For installations not indicated above the following formula is to be used: TR = (kW x 3412) x (Voltage Correction) / (1.08 x CFM) Where: TR = Temperature Rise kW = Heater Kit Actual kW 3412 = Btu per kW VC* = 1.0 (240 Supply Volts) = 0.92 (230 Supply Volts) = 0.84 (220 Supply Volts) = 0.77 (210 Supply Volts) = 0.75 (208 Supply Volts) 1.
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